National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Fair

41°F

5°C

Humidity 51%
Wind Speed N 7 mph
Barometer 30.15 in (1021.1 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 27 Mar 6:53 pm EDT
Extended Forecast for

Sunbury PA

  • Tonight

    Tonight: Increasing clouds, with a low around 26. North wind 3 to 6 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Increasing clouds, with a high near 44. Northwest wind 5 to 9 mph, with gusts as high as 23 mph.

    High: 44 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 26. Calm wind.

    Low: 26 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 55 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40. South wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of rain after 2pm. Partly sunny, with a high near 60. Chance of precipitation is 20%.

    High: 60 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 26. North wind 3 to 6 mph.
Saturday
Increasing clouds, with a high near 44. Northwest wind 5 to 9 mph, with gusts as high as 23 mph.
Saturday Night
Increasing clouds, with a low around 26. Calm wind.
Sunday
Partly sunny, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 40. South wind around 5 mph becoming calm in the evening.
Monday
A slight chance of rain after 2pm. Partly sunny, with a high near 60. Chance of precipitation is 20%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Wednesday
Showers likely, mainly after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 60%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Thursday
A chance of showers. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Friday
Showers likely. Mostly cloudy, with a high near 52. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.87°N 76.79°W (Elev. 482 ft)
Last Update:
2:21 pm EDT Mar 27, 2026
Forecast Valid:
7pm EDT Mar 27, 2026-6pm EDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation